MAX481MSA/PR Maxim Integrated, MAX481MSA/PR Datasheet - Page 10

• Manufacturer Part Number: MAX481MSA/PR
• Description: RS-422/RS-485 Interface IC Low-Power Slew-Rate-Limited RS-485/RS-422 Transceivers
• Manufacturer: Maxim Integrated

Specifications of MAX481MSA/PR

• Data Rate: 2.5 Mbps
• Operating Supply Voltage: 5 V
• Supply Current: 500 uA
• Operating Temperature Range: 0 C to + 70 C
• Input Voltage: 0.8 V to 2 V
• Maximum Power Dissipation: 727 mW
• Output Voltage: 3 V
• Product: RS-422/RS-485 Combination
• Propagation Delay Time Ns: 30 ns, 90 ns

MAX487–MAX491/MAX1487
10
Low-Power, Slew-Rate-Limited
RS-485/RS-422 Transceivers
Figure 8. Driver Propagation Delays
Figure 10. Receiver Propagation Delays
Table 1. Transmitting
X = Don’t care
High-Z = High impedance
* Shutdown mode for MAX481/MAX483/MAX487
_______________________________________________________Switching Waveforms
V
_________________Function Tables (MAX481/MAX483/MAX485/MAX487/MAX1487)
RO
A-B
DIFF
DI
V
-V
V
RE
V
-V
X
X
OH
0
1
OL
3V
0V
V
0V
ID
ID
Z
Y
O
O
V
1/2 V
O
1.5V
0V
t
R
10%
INPUTS
O
DE
1
1
0
0
90%
1.5V
t
PLH
V
t
t
PHL
SKEW =
DIFF
DI
X
X
1
0
INPUT
= V (Y) - V (Z)
| t
PLH
OUTPUT
- t
High-Z
High-Z
PHL
t
t
PHL
PLH
Z
0
1
|
t
OUTPUTS
F
90%
*
1.5V
0V
1.5V
High-Z
High-Z
Y
1
0
10%
1/2 V
*
O
Figure 9. Driver Enable and Disable Times (except MAX488 and
MAX490)
Figure 11. Receiver Enable and Disable Times (except MAX488
and MAX490)
Table 2. Receiving
X = Don’t care
High-Z = High impedance
* Shutdown mode for MAX481/MAX483/MAX487
RO
RO
RE
DE
V
Y, Z
Y, Z
V
3V
0V
CC
0V
3V
0V
0V
OL
RE
0
0
0
1
1.5V
1.5V
INPUTS
DE
0
0
0
0
1.5V
2.3V
1.5V
2.3V
t
t
t
t
ZL(SHDN)
ZL(SHDN)
ZH(SHDN)
ZH(SHDN)
OUTPUT NORMALLY HIGH
OUTPUT NORMALLY HIGH
OUTPUT NORMALLY LOW
OUTPUT NORMALLY LOW
Inputs open
, t
, t
, t
, t
ZL
> +0.2V
ZL
ZH
< -0.2V
ZH
A-B
X
t
t
t
HZ
t
HZ
LZ
LZ
OUTPUT
High-Z
Maxim Integrated
RO
1.5V
1
0
1
1.5V
V
V
V
V
OL
OH
OL
OH
*
+ 0.5V
+ 0.5V
- 0.5V
- 0.5V